Internal-combustion engine



July 5, 192'?,

w. .LGANNET INTERNAL COMBUSTION ENGINE Filed May 25,

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3 Sheets-Sheet 1 INV EN TOR.

@MA/Lb' A1,634,901 w. J. GANNET INTERNAL coMBUsTloN ENGINE July 5, 1927.

'Filed May 25, 1922 3 sheets-sheet 2 Il im l F v INVEN'J'OR.

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July 5,1927. W' J. GANNET INTERNAL COMBUSTION ENGINE 5 Sheets-Sheet Filed May 25, 1922 1N VENTOR.

ATTORNE PatentedV July 5, 1927.

STATS WILLIAM J. Gaiam-:Tj

INTERNAL-coiffer application filed May 25,

My invention relates to iinpiovements in internal combustion engines and more particularly to the two-cycle type of engine wherein the gas mixture is compressed and ignited at each compression stroke of the piston while. th(` spent gases are discharged and additional gas mixture' is supplied to the cylinder during and at the conclusion of the outward stroke of the piston.

'l'hc prime objects ot' my invention are to insure better control ot this type of engine than has previously been etlected, better action of the double-functioned pi-ton and greater certainty of operation during conditions ot extreme throttling` of the gas mixtion connected with the piston and second-.

arily by a throttling lever for regulating the position yot the valve member. This valve member is ot' a specialized rocking type Which cooperates with a suitable cylinder port or ports and a receiving pocket or pockets upon the piston headfor holding a limited or proportionate quantity of the gas mixture out of contact With the spent gases, in which pocket the charge is fired by the adjacent or entrant spark plug at` the completion-of each compression stroke. The structural details and their functions may be more readily explained by making reference to the accompanying drawings, wherein:

Figure l is a View of the preferred twocycle combustionengine in vertical section showing the relation of the parts at the conclusion of the out-stroke. p

Fig. 2 is a similar view illustrating the positions of the respective parts at the midstroke of the iston.

Fig. 3 is a so a vertical section showing the members in their relation at the completion ot' the compression stroke.

Fig. 4- is a transverse section through the GF CLEVELAND, OHI.

ION ENGINE.

1922. arial No. 563,6.

engine, tu position, however, being reversed, and i Fig. '5 is a fragmentary vertical section, illustrating the cliaintered valve and its port. Throughout the several figures ot the drawings'l have employed the saine character of reference to indicate similar parts.

It will be unnecessary to explain all ot the' details of construction shown in the draw ings, siice certain'features of the internat combustion engine therein illustrated are common to all engines-of this general class, hence l shall principally confine my description to the features of improvement delined in the appended claims. ments correct the common disadvantage inherent in two-cycle engines because of the in ability to control their operation accurately in accordance with the torque or load. This l have accomplished by employing suitable v: lve mechanism for controlling the gas miX- tu 'e independently of the piston and properly timing` its admission to the explosion chimber. This control also prevents leakage of the gas mixture past or around the piston from the inlet port` to the exhaust port as will be further explained.

Referring first to Figure l of the drawings, the usual water-jacketed cylinder a is shown with the piston ZJ at the completion of its out-stroke and with the rocking valve c open to clear the inlet port d positioned laterally of said cylinder a. The exhaust port e and inlet port d are cleared by the piston so the bulk ot' the spent'gases have' been discharged and the charge of gas mixture liasentered the pockets f and has assisted in expelling the spent gases from the upper portion or explosion chamber of cylinder 0;.

Figure 2 illustrates the relation of the parts with the piston advanced substantially One-half of its compression stroke into the explosion chamber, thus closing the inlet and exhaust ports, while the valve c has imme- 100 diately been rocked into position to close the inlet port and partially close the hy-pass chamberl g. The upward stroke of the piston has partly completed the compression of the gas mixture in explosion chamber ap', 105 -while the next charge of gas mlxture haS These iinprovesol lll)

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